In addition to the IWW186333 and WW728473, Sony registered a third new camera that should be announced in the next 30-90 days. We already know that Sony is coming with a new high-end 8k model, then there is the Sony a7 IV and the third camera could be a new RX model as SonyAddict suggests. Stay tuned for updates.
Update - Sony also registered a new/unreleased wireless microphone ECM-W2BT compatible with Bluetooth 5.0:
Via Nokishita
